Supreme Court Justice Anthony Kennedy mistakenly blocked the start of same-sex marriage in Nevada in an order that spawned confusion among state officials and disappointment in couples hoping to be wed.

The decision by the U.S. Supreme Court on Monday not to hear any appeals from states seeking to keep their gay marriage bans had given hope to thousands of couples across the country that they would soon be able to marry.

Same-sex couples who lined up to get married in Idaho and made plans to obtain wedding licenses in Las Vegas had their hopes dashed Wednesday after a U.S. Supreme Court justice temporarily blocked a lower-court ruling.